MANORANJAN MITRA 6] 
the latter case the conidiophores are quite long, and are angularly bent and 
nodulose at the point where there has been a formation of conidia. ‘This for- 
mation of secondary sets of conidia takes place in old cultures and, to a some- 
what lesser extent, in cultures that are taken out of the tube and incubated 
for some days on slides. When the conidiophore is formed at the end of a 
hypha (Plate H, figs. 4, 6), it is distinguished from other hyphe by its colour 
which turns distinctly deeper from a particular septum. 
The characteristics of conidia have already been described, but those 
produced in culture are slightly smaller in size than those found in the field. 
The accompanying curve {[ext-figure) is drawn to compare the length and 
breadth of conidia in nature and in artificial culture. The conidia generally 
are 2-3 septate, but in culture sometimes uniseptate ones are formed 
(Plate III, fig. 11) 
12) 
P 
oO 
a nag 
= 
oe Hot 
= HH HHH 
= 
© Sisiele | iil 
end SS aa esas! 
a BEae eos 
> BEBE ES Ee Bae 
oo HERR aeS Hae SReaet 
ene ae Va 
ral gas EES Eo 
melololere Por We Ts 
feted of= (ea ace clea 
GnGeEa Home| ei Ay 
afi a) fil Ages . ae 
fet [a] a ee a 
alate eas Leelee fees ane e Ue hed 
ie BEG fl 
etal Sete tole hime Sm gan 
Bose e RISO SeOCnRAS Ano 
Fs nego ols (ca NCH ew 
SUSUESSEEERC&GEE 
== Sistas dune 
1 6 
Measurement of Spores in microns 
The formation of chlamydospores takes place in most of the cultures. 
The cells of a hypha swell up singly or sometimes in a long line, become spherical 
or oval in shape, later on become thick-walled and, as the culture gets old, 
